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Foresti ML, Milani S, Loglio F, Innocenti M, Pezzatini G, Cattarin S. Ternary CdSxSe 1-x deposited on Ag(111) by ECALE: synthesis and characterization. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2005; 21:6900-7. [PMID: 16008402 DOI: 10.1021/la050176k] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Morphology and electronic properties of CdS, CdSe, and the ternary compounds of formula CdSxSe(1-x) deposited on Ag(111) by ECALE have been characterized as a function of the composition. The number of the attainable x values is limited by the necessity of using well-defined CdS/CdSe deposition sequences. However, the quantitative analysis carried out by XPS and electrochemical stripping experiments indicates that the ECALE method has a good control on composition. The AFM images together with the electrochemical characterization indicate both two-dimensional and three-dimensional growth contributions. The photospectra recorded at CdS film electrodes in liquid junction with an alkaline (poly)sulfide electrolyte show good efficiency of photoconversion and band gap typical of the single crystal. Lower photoconversion efficiency and the presence of subband gap response are observed for CdSe; a possible reason is some crystalline disorder due to lower control of the layer-by-layer deposition in the case of Se. The dependence of band gap on composition of ternary CdSxSe(1-x) ECALE films is monotonic and in agreement with literature data reported for bulk materials.
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Affiliation(s)
- M L Foresti
- Dipartimento di Chimica, Università di Firenze, Via della Lastruccia 3, 50019 Sesto Fiorentino (FI), Italy.
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Henríquez R, Gómez H, Riveros G, Guillemoles JF, Froment M, Lincot D. Electrochemical Deposition of ZnSe from Dimethyl Sulfoxide Solution and Characterization of Epitaxial Growth. J Phys Chem B 2004. [DOI: 10.1021/jp0486191] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- R. Henríquez
- Laboratoire d'Electrochimie et Chimie Analytique (UMR CNRS 7575), Ecole Nationale Supérieure de Chimie de Paris, 11 Pierre et Marie Curie, 75321 Paris CEDEX 05, France, Instituto de Química, Facultad de Ciencias Básicas y Matemáticas, Universidad Católica de Valparaíso, Casilla 4059, Valparaíso, Chile, and Laboratoire de Physique des Liquides et Electrochimie (UPR 15 CNRS), Université Pierre et Marie Curie, 4 Place Jussieu, 75252 Paris CEDEX 05, France
| | - H. Gómez
- Laboratoire d'Electrochimie et Chimie Analytique (UMR CNRS 7575), Ecole Nationale Supérieure de Chimie de Paris, 11 Pierre et Marie Curie, 75321 Paris CEDEX 05, France, Instituto de Química, Facultad de Ciencias Básicas y Matemáticas, Universidad Católica de Valparaíso, Casilla 4059, Valparaíso, Chile, and Laboratoire de Physique des Liquides et Electrochimie (UPR 15 CNRS), Université Pierre et Marie Curie, 4 Place Jussieu, 75252 Paris CEDEX 05, France
| | - G. Riveros
- Laboratoire d'Electrochimie et Chimie Analytique (UMR CNRS 7575), Ecole Nationale Supérieure de Chimie de Paris, 11 Pierre et Marie Curie, 75321 Paris CEDEX 05, France, Instituto de Química, Facultad de Ciencias Básicas y Matemáticas, Universidad Católica de Valparaíso, Casilla 4059, Valparaíso, Chile, and Laboratoire de Physique des Liquides et Electrochimie (UPR 15 CNRS), Université Pierre et Marie Curie, 4 Place Jussieu, 75252 Paris CEDEX 05, France
| | - J. F. Guillemoles
- Laboratoire d'Electrochimie et Chimie Analytique (UMR CNRS 7575), Ecole Nationale Supérieure de Chimie de Paris, 11 Pierre et Marie Curie, 75321 Paris CEDEX 05, France, Instituto de Química, Facultad de Ciencias Básicas y Matemáticas, Universidad Católica de Valparaíso, Casilla 4059, Valparaíso, Chile, and Laboratoire de Physique des Liquides et Electrochimie (UPR 15 CNRS), Université Pierre et Marie Curie, 4 Place Jussieu, 75252 Paris CEDEX 05, France
| | - M. Froment
- Laboratoire d'Electrochimie et Chimie Analytique (UMR CNRS 7575), Ecole Nationale Supérieure de Chimie de Paris, 11 Pierre et Marie Curie, 75321 Paris CEDEX 05, France, Instituto de Química, Facultad de Ciencias Básicas y Matemáticas, Universidad Católica de Valparaíso, Casilla 4059, Valparaíso, Chile, and Laboratoire de Physique des Liquides et Electrochimie (UPR 15 CNRS), Université Pierre et Marie Curie, 4 Place Jussieu, 75252 Paris CEDEX 05, France
| | - D. Lincot
- Laboratoire d'Electrochimie et Chimie Analytique (UMR CNRS 7575), Ecole Nationale Supérieure de Chimie de Paris, 11 Pierre et Marie Curie, 75321 Paris CEDEX 05, France, Instituto de Química, Facultad de Ciencias Básicas y Matemáticas, Universidad Católica de Valparaíso, Casilla 4059, Valparaíso, Chile, and Laboratoire de Physique des Liquides et Electrochimie (UPR 15 CNRS), Université Pierre et Marie Curie, 4 Place Jussieu, 75252 Paris CEDEX 05, France
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